• God bless Persona 4 and it's costumes Kanji is allset. He's already pretty close to Frankenstein monster intelligence levels and strength because he's big and dumb so the only real change will be actually being made of dead body parts ooooh spooky except he probably won't notice or get the reference.
• Phanan will be a cheesy Halloween pirate because of course he will with a real hook hand, eye patch and peg leg in place of his usual prosthetics. Normally this would bother him but he's been here long enough and experienced enough festivals to figure out it's just temporary so he'all be living it up instead.
• Ianto and Aigis will (probably) be normal and enjoying the festivities without craziness unless I get a really sweet costume idea between now and then.